"Really? You never mentioned her."
These words had hit Sarah like a punch in the gut and were now echoing painfully through her head. He'd never mentioned her at all, all the while she been waiting an eternity for him to return.
You've been a fool, Sarah, said a niggling voice at the back of her mind, you should have known the Doctor would move on once he left you.
"Oh, shut up!" Sarah scolded herself aloud, causing Rose and the Doctor to turn around.
"Everything all right?" the Doctor asked, a little concerned.
Sarah looked back at him. "Fine."